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目的了解绵阳市农村饮用水水质现状,及时掌握农村饮水安全工程卫生状况。方法对绵阳市农村饮用水安全工程进行基本情况调查和水样检测,按GB/T 5750-2006《生活饮用水标准检验方法》检测,按GB 5749-2006《生活饮用水卫生标准》评价。结果绵阳市农村供水方式以分散式供水为主,水源类型以地下水为主,集中式供水以完全处理工程和仅消毒处理制水方式为主,分别占31.60%和33.85%。分散式供水以机器取水为主,占83.30%。抽检水样1 230份,合格率57.24%;枯水期水样合格率和丰水期水样合格率差异无统计学意义(P>0.05)。不合格指标中,消毒剂指标和总大肠菌群合格率最低。结论绵阳市农村饮用水安全工程消毒制度执行不彻底,微生物指标合格率不高,多数水厂缺乏自检能力。
Objective To understand the status quo of drinking water quality in rural areas in Mianyang and to grasp the sanitary status of drinking water safety projects in rural areas in time. Methods The basic situation of drinking water safety project in rural areas of Mianyang City and water samples were tested. According to GB / T 5750-2006 Standard Test Method for Domestic Drinking Water, it was evaluated according to GB 5749-2006 Standard of Drinking Water Quality. Results The water supply in rural areas in Mianyang City was mainly distributed water supply. The type of groundwater was mainly water. The centralized water supply was dominated by the project of complete treatment and disinfection only, accounting for 31.60% and 33.85% respectively. Decentralized water was dominated by machine water, accounting for 83.30%. A sampling of 1 230 samples, the pass rate of 57.24%; dry season water samples pass rate and wet season water samples pass rate was no significant difference (P> 0.05). In the unqualified index, the disinfectant index and the total coliform group pass rate is the lowest. Conclusion The disinfection system of rural drinking water safety project in Mianyang City is not implemented completely. The passing rate of microbial indicators is not high, and most water plants lack self-test capability.